I recently upgraded from build 1809 to resolve 3 primary issues: 1. my build was out of service, 2. Windows Update not working correctly, 3. Access to the Microsoft Store not working correctly. Following the upgrade I've noticed the following problems (so far):1. Windows Defender intermittently does not recognise that my Third Party AntiVirus provider is active.2. I use the Windows Live Mail component of Windows Essentials. There was some corruption, because (a) I received a message stating that the database was being recovered every time I accessed the program, (b) there was significant dupli